Photographic-plate holder



(No Model.)

F. WIJAOKSON.

PHOTOGRAPHIG PLATE HOLDER.

Patented May 15, 1883.

N. PETERS, Phowulho m hcr. Washmglun, D. c.

tory. The moistening of the slides injures them, and the paper, if itdoes not come off UNITED STATES PATENT OFFICE.

FRANOIS W. JACKSON, OF EAST ORANGE, NEVV JERSEY.

PHOTOGRAPHIC- PLATE HOLDER.

SPECIFICATION formingpart of Letters Patent No. 277,737, dated May 15,1883,

I Application filed February 3, 1883. (No model.)

To all whom it may concern:

' Be it known that I, FRANCIS W. JACKSON, a citizen of the UnitedStates, residing at East Oran ge,in the county of Essex and State of NewJersey, have invented certain new and useful Improvements inPhotographic-Plate Holders; and I do hereby declare the following to bea full, clear, and exact description of theinvention,such as willenableothers skilled in the art to which it appertains to make and use thesame, refereneebeing had to the accompanying drawings, and to letters ofreference marked thereon, which form a part of this specification.

This invention relates more particularly to that portion of photographicapparatus known as dry-plate holders, and has for its object an improvedmethod of constructing said holders, which will be hereinafter fully setforth, and finally embodied in the claims.

In the drawings, in which similar letters of reference indicate likeparts in each of the several figures, Figure 1 is a plan view of aplate-holder; and Fig. 2 is a sectional view of the same, taken throughline as.

The purpose of these holders is well understood by those skilled in theart.

The dry-plate system of photography, as is well known, has superseded toa great extent the wet-plate system, but more particularly foront-of-door photography, or viewing, as it is called. The simplicity ofthe new process has thrown the art open to the amateur, and itspopularity is rapidly increasing.

The defect in the plate-holders up to the present time has been thatthere were no permanent means provided to designate upon the holderswhich plates had been exposed, and innumerable errors of exposure havebeen made through this defect. It has been ens tomary with some to pastepaper upon the slides of the plate-holders, on which to make memoranda;but this plan is very unsatisfacaccidentally, needs frequent renewin Theadvantage of having a permanent'face on which to writethe details of theexposure of the plate, the view taken, 850., will therefore be manifestto amateur or professional photographers. This object I accomplisheither by coating the slides a a,or any part of the frame b ofplate-holder, or both, with mineral, metallic, or rubber paint, orenamel or silicate,

or paper, or any other substance coated with silicate or analogousmaterials, or by constructing the slide or frame of the holder of anymaterials-such, for instance, as celluloid or rubber-compounded withsilicate or analogous materials, so as to form a surface capable ofbeing written upon and of having the writing erased at pleasure anindefinite number of times without impairing or injuring the saidsurface. By thus constructing these articles every facility is affordedfor preserving with each view the data referring to it.

I am aware that plate-holders, &c., have been made heretofore of plasticand other materials-such as rubber, celluloid, paper, papier mach, wood,wood pulp, card board, metal, &e.and also by attaching together a numberof layers of materials; but never, so far as I am aware, have they beenprovided permanently with a surface to admit of being written upon andof the writing being erased without injury to said surface, as hereincontemplated.

Having thus described my invention, what I claim as new, and wish tosecure by Letters Patent, is

1. As a new article of manufacture, adryplate holder for photographicpurposes, having the frame or slide, or both, provided with a surface ofsilicate or other material which will admit of being written upon andhavingthe writing erased without injury to said surface, as and for thepurposes herein set forth.

2. In. a dry-plate holder for photographic purposes, the combination,with the frame thereof, of a slide having a surface of silicate or othermaterial which will admit of being written upon and the writing erasedwithout injurin g the said writing-surface, as set forth.

3. In a dry-plate holder for photographic purposes, the combination of aframe with a slide constructed of such material as celluloid andprepared rubber, having the outer or exposed portion thereof prepared orcoated with materials, as herein described, so as to admit of beingwritten upon and of the writing being erased an indefinite number oftimes without impairing said surface, as set forth.

In testimony that I claim the foregoing I have hereunto set my hand this30th day of January, 1883.

Witnesses: FRANCIS W. JACKSON.

OLIVER DRAKE, F. F. CAMPBELL.

